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If the image already has a colormap, it is replaced. AcquireImageColormap() returns MagickTrue if successful, otherwise MagickFalse if there is not enough memory.</p> 89 90 <p>The format of the AcquireImageColormap method is:</p> 91 92 <pre class="text"> 93 MagickBooleanType AcquireImageColormap(Image *image,const size_t colors, 94 ExceptionInfo *exception) 95 </pre> 96 97 <p>A description of each parameter follows:</p> 98 99 <dd> 100 </dd> 101 102 <dd> </dd> 103 <dl class="dl-horizontal"> 104 <dt>image</dt> 105 <dd>the image. </dd> 106 107 <dd> </dd> 108 <dt>colors</dt> 109 <dd>the number of colors in the image colormap. </dd> 110 111 <dd> </dd> 112 <dt>exception</dt> 113 <dd>return any errors or warnings in this structure. </dd> 114 115 <dd> </dd> 116 </dl> 117 <h2><a href="../../api/MagickCore/colormap_8c.html" id="CycleColormap">CycleColormap</a></h2> 118 119 <p>CycleColormap() displaces an image's colormap by a given number of positions. If you cycle the colormap a number of times you can produce a psychodelic effect.</p> 120 121 <p>WARNING: this assumes an images colormap is in a well know and defined order. Currently Imagemagick has no way of setting that order.</p> 122 123 <p>The format of the CycleColormapImage method is:</p> 124 125 <pre class="text"> 126 MagickBooleanType CycleColormapImage(Image *image,const ssize_t displace, 127 ExceptionInfo *exception) 128 </pre> 129 130 <p>A description of each parameter follows:</p> 131 132 <dd> 133 </dd> 134 135 <dd> </dd> 136 <dl class="dl-horizontal"> 137 <dt>image</dt> 138 <dd>the image. </dd> 139 140 <dd> </dd> 141 <dt>displace</dt> 142 <dd> displace the colormap this amount. </dd> 143 144 <dd> </dd> 145 <dt>exception</dt> 146 <dd>return any errors or warnings in this structure. </dd> 147 148 <dd> </dd> 149 </dl> 150 </div> 151 </div> 152 </main><!-- /.container --> 153 <footer class="magick-footer"> 154 <p><a href="../../www/security-policy.html">Security</a> 155 <a href="../../www/architecture.html">Architecture</a> 156 <a href="../../www/links.html">Related</a> 157 <a href="../../www/sitemap.html">Sitemap</a> 158 159 <a href="colormap.html#"><img class="d-inline" id="wand" alt="And Now a Touch of Magick" width="16" height="16" src="../../images/wand.ico"/></a> 160 161 <a href="http://pgp.mit.edu/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> 162 <a href="../../www/support.html">Donate</a> 163 <a href="../../www/contact.html">Contact Us</a> 164 <br/> 165 <small> 1999-2019 ImageMagick Studio LLC</small></p> 166 </footer> 167 168 <!-- Javascript assets --> 169 <script src="../assets/magick.js" crossorigin="anonymous"></script> 170 <script>window.jQuery || document.write('<script src="https://localhost/ajax/libs/jquery/3.3.1/jquery.min.js"><\/script>')</script> 171 </body> 172 </html> 173 <!-- Magick Cache 29th December 2018 16:44 -->
